To be sure this medication is helping your condition and not causing harmful effects, your doctor will need to check your progress on a regular basis. Your blood pressure and heart rate may also need to be checked. Do not miss any` follow-up visits to your doctor.

If you are being treated for high blood pressure, keep using this medication even if you feel fine. High blood pressure often has no symptoms. You may need to use blood pressure medication for the rest of your life.

Tell your doctor if you regularly use other medicines that make you sleepy. They can add to sleepiness caused by guanfacine.